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...per sec. If you see something like 37 or so, you are running into a known EL3 issue. (I think you are familiar with this issue... qlogic folks referred you to the affine patch). That's from the kernel end. From the device end, Dell should be able to provide guidance. Hope this helps. Sunil benwood1@airmail.net wrote: >Hello Sunil, > >I'm getting terrible performance out of an OCFS partition when attached >using a Dell PERC 3/DC controller (w/ latest firmware) running RHEL 3.0. >Things are fine on an internal disk using the built-in SCSI controller on >my Dell PowerEdge...

I successfully have OCFS running in a two-node RAC environment using RHAS 3 (2.4.21-4.EL) using Qlogic 2310 cards. IO performance, however, was terrible with the combination of OCFS and the Qlogic cards. After extensive testing, OCFS did fine on its own, as did the fibre cards. Put the two together, and everything literally ran twice as slow. Support at Qlogic pointed me to